For Colt 1911 Auto; 9mm & .38 Super
9mm and .38 Super. 8 lb., 10% extra power. 7 lb. is standard. Fits Govt/Commander magazines.
1911, Issue:11, Page:029
Big Book Catalog, Issue:68, Page:128
New Product Supplement, Issue:554, Page:005
Personal Protection, Issue:01, Page:026
Sinclair, Issue:1A, Page:027